68721076 has 12 divisors (see below), whose sum is σ = 122300640. Its totient is φ = 33778040.

The previous prime is 68721061. The next prime is 68721077. The reversal of 68721076 is 67012786.

It is a happy number.

It is a super-3 number, since 3×68721076³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68721077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145360 + ... + 145831.

It is an arithmetic number, because the mean of its divisors is an integer number (10191720).

Almost surely, 2^68721076 is an apocalyptic number.

It is an amenable number.

68721076 is a deficient number, since it is larger than the sum of its proper divisors (53579564).

68721076 is a wasteful number, since it uses less digits than its factorization.

68721076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291254 (or 291252 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 68721076 is about 8289.8176095738. The cubic root of 68721076 is about 409.6031774274.

The spelling of 68721076 in words is "sixty-eight million, seven hundred twenty-one thousand, seventy-six".